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Posted to common-dev@hadoop.apache.org by "Hadoop QA (JIRA)" <ji...@apache.org> on 2008/04/03 09:36:24 UTC
[jira] Commented: (HADOOP-3159) FileSystem cache keep overwriting
cached value
[ https://issues.apache.org/jira/browse/HADOOP-3159?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12584998#action_12584998 ]
Hadoop QA commented on HADOOP-3159:
-----------------------------------
+1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12379211/3159_20080402.patch
against trunk revision 643282.
@author +1. The patch does not contain any @author tags.
tests included +1. The patch appears to include 3 new or modified tests.
javadoc +1. The javadoc tool did not generate any warning messages.
javac +1. The applied patch does not generate any new javac compiler warnings.
release audit +1. The applied patch does not generate any new release audit warnings.
findbugs +1. The patch does not introduce any new Findbugs warnings.
core tests +1. The patch passed core unit tests.
contrib tests +1. The patch passed contrib unit tests.
Test results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2134/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2134/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2134/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2134/console
This message is automatically generated.
> FileSystem cache keep overwriting cached value
> ----------------------------------------------
>
> Key: HADOOP-3159
> URL: https://issues.apache.org/jira/browse/HADOOP-3159
> Project: Hadoop Core
> Issue Type: Bug
> Reporter: Tsz Wo (Nicholas), SZE
> Assignee: Tsz Wo (Nicholas), SZE
> Fix For: 0.17.0
>
> Attachments: 3159_20080402.patch
>
>
> Consider the following:
> {code}
> Configuration conf1 = new Configuration();
> FileSystem fs1 = FileSystem.get(conf1); //conf1 may be modified, the cache key stored will use the modified values.
> Configuration conf2 = new Configuration(); //create another conf, which won't have the modified values.
> FileSystem fs2 = FileSystem.get(conf2); //may initialize another FileSystem instead of returning the cached FileSystem, since conf2 does not have the modified values initially.
> {code}
> Therefore, FileSystem.get(conf) may keeps creating FileSystem and replaces the cached one.
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